| Hostun | |
| Commune Status: | Commune |
| Arrondissement: | Valence |
| Canton: | Vercors-Monts du Matin |
| Insee: | 26149 |
| Postal Code: | 26730 |
| Mayor: | Bruno Vitte[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Valence Romans Agglo |
| Coordinates: | 45.0403°N 5.1986°W |
| Elevation M: | 325 |
| Elevation Min M: | 196 |
| Elevation Max M: | 1133 |
| Area Km2: | 18.24 |
Hostun (in French pronounced as /ɔstœ̃/; Occitan (post 1500);: Ostun) is a commune in the Drôme department in southeastern France.